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2015


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Linear and nonlinear magnetic properties of ferrofluids

Szalai, I., Nagy, S., Dietrich, S.

Physical Review E, 92(4), American Physical Society, Melville, NY, 2015 (article)

DOI [BibTex]

2015

DOI [BibTex]


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Microfluidic-Assisted Fabrication of Flexible and Location Traceable Organo-Motor

Seo, K. D., Kwak, B. K., Sanchez, S., Kim, D. S.

IEEE Transactions on Nanobioscience, 14(3):298-304, IEEE, New York, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Tracer diffusion of hard-sphere binary mixtures under nano-confinement

Marconi, U., Malgaretti, P., Pagonabarraga, I.

The Journal of Chemical Physics, 143(18), American Institute of Physics, Woodbury, N.Y., 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Fluctuating multicomponent lattice Boltzmann model

Belardinelli, D., Sbragaglia, M., Biferale, L., Gross, M., Varnik, F.

Physical Review E, 91(2), American Physical Society, Melville, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Phase diagram of fluid phases in He3\textminusHe4 mixtures

Farahmand Bafi, N., Maciolek, A., Dietrich, S.

Physical Review E, 91(2), American Physical Society, Melville, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Three-body critical Casimir forces

Gomes de Mattos, T., Harnau, L., Dietrich, S.

Physical Review E, 91(4), American Physical Society, Melville, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Thermal and structural properties of ionic fluids

Bartsch, H., Dannenmann, O., Bier, M.

Physical Review E, 91(4), American Physical Society, Melville, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Fluctuational electrodynamics for nonlinear media

Soo, H.

Universität Stuttgart, Stuttgart, 2015 (mastersthesis)

[BibTex]

[BibTex]


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Micro- and Nanomachines
IEEE Transactions on Nanobioscience, 14, pages: 74, IEEE, New York, NY, 2015 (misc)

[BibTex]

[BibTex]


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Frenetic aspects of second order response

Basu, U., Krüger, M., Lazarescu, A., Maes, C.

Physical Chemistry Chemical Physics, 17(9):6653-6666, Royal Society of Chemistry, Cambridge, England, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Critical Casimir forces in the presence of random surface fields

Maciolek, A., Vasilyev, O., Dotsenko, V., Dietrich, S.

Physical Review E, 91(3), American Physical Society, Melville, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Lab-in-a-tube systems as ultra-compact devices

Sanchez, S.

Lab chip, (3):610-613, 2015 (article)

Abstract
{In this Focus article, I will give an overview on the current and future interests of our multidisciplinary research group. One of our main interests is to develop highly integrated on-chip components towards ultra-compact devices for biosensing technologies (lab-in-a-tube). Our other activities are focused in developing self-powered devices that can generate either motion of a fluid or autonomous propulsion. We are particularly interested in three-dimensional (3D) nanofabrication technologies and stimuli responsive soft materials.}

DOI [BibTex]

DOI [BibTex]


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Catalytic Mesoporous Janus Nanomotors for Active Cargo Delivery

Ma, X., Hahn, K., Sanchez, S.

Journal of the American Chemical Society, 137(15):4976-4979, ACS Publications, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Guest Editorial: Special Issue: Micro- and Nanomachines

Paxton, W., Sanchez, S., Nitta, T.

IEEE Transactions on Nanobioscience, 14(3):258-259, IEEE, New York, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Self-Assembly via Microfluidics

Wang, L., Sanchez, S.

Lab on a Chip, 15(23):4383-4386, Royal Society of Chemistry, Cambridge, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Nonequilibrium interfacial tension during relaxation

Bier, M.

Physical Review E, 92(4), American Physical Society, Melville, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Evaporation and growth of liquid drops

Pöhnl, Ruben

Universität Stuttgart, Stuttgart, 2015 (mastersthesis)

[BibTex]

[BibTex]


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Operator Formalism for Topology-Conserving Crossing Dynamics in Planar Knot Diagrams

Rohwer, C. M., Müller-Nedebock, K. K.

Journal of Statistical Physics, 159(1):120-157, Kluwer Academic Publishers [etc.], New York, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Nano and micro architectures for self-propelled motors

Parmar, Jemish, Ma, X., Katuri, Jaideep, Simmchen, Juliane, Stanton, Morgan, Trichet-Paredes, Carolina, Soler, Llu\’\is, Sanchez, Samuel

Science and Technology of Advanced Materials, 16, IoPP, Bristol, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Critical Casimir forces for a particle between two planar walls

Vasilyev, O., Maciolek, A.

Journal of Non-Crystalline Solids, 407, pages: 376-383, North-Holland, Amsterdam, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Microfluidic-Assisted Fabrication of Flexible and Location Traceable Organo-Motor

Seo, K. D., Kwak, B. K., Sanchez, S., Kim, D. S.

IEEE Transactions on Nanobioscience, 14(3):298-304, IEEE, New York, NY, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Bioprinting of 3D hydrogels

Stanton, M. M., Samitier, J., Sanchez, S.

Lab on a Chip, 15(15):3111-3115, Royal Society of Chemistry, Cambridge, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Enhanced wavelength-dependent surface tension of liquid-vapour interfaces

Höfling, F., Dietrich, S.

EPL, 109(4), 2015 (article)

Abstract
{Due to the simultaneous presence of bulk-like and interfacial fluctuations the understanding of the structure of liquid-vapour interfaces poses a long-lasting and ongoing challenge for experiments, theory, and simulations. We provide a new analysis of this topic by combining high-quality simulation data for Lennard-Jones fluids with an unambiguous definition of the wave-number\textendashdependent surface tension \gamma(t) based on the two-point correlation function of the fluid. Upon raising the temperature, \gamma(t) develops a maximum at short wavelengths. We compare these results with predictions from density functional theory. Our analysis has repercussions for the interpretation of grazing-incidence small-angle X-ray scattering (GISAXS) at liquid interfaces.}

DOI [BibTex]


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Wetting Transitions in Terms of Effective Potentials

Napiorkowski, M., Dietrich, S.

Physical Review Letters, 114(3), American Physical Society, Woodbury, N.Y., 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Dimensionality of Rolled-up Nanomembranes Controls Neural Stem Cell Migration Mechanism

Koch, B., Meyer, A. K., Helbing, L., Harazim, S. M., Storch, A., Sanchez, S., Schmidt, O. G.

Nano Letters, 15(8):5530-5538, American Chemical Society, Washington, DC, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Surface Conductive Graphene-Wrapped Micromotors Exhibiting Enhanced Motion

Ma, X., Katuri, J., Zeng, Y., Zhao, Y., Sanchez, S.

ACS Nano, 11(38):5023-5027, American Chemical Society, Washington, DC, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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Rounding of the localization transition in model porous media

Schnyder, Simon K., Spanner, Markus, Höfling, Felix, Franosch, Thomas, Horbach, Jürgen

Soft Matter, 11, pages: 701-711, Royal Society of Chemistry, Cambridge, UK, 2015 (article)

DOI [BibTex]

DOI [BibTex]


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3D hydrodynamic interactions lead to divergences in 2D diffusion

Bleibel, J., Dominguez, A., Oettel, M.

Journal of Physics: Condensed Matter, 27(19), IOP Publishing, Bristol, UK, 2015 (article)

DOI [BibTex]

DOI [BibTex]

2014


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Finite-size scaling study of shear viscosity anomaly at liquid-liquid criticality

Roy, S., Das, S. K.

The Journal of Chemical Physics, 141(23), December 2014 (article)

DOI [BibTex]

2014

DOI [BibTex]


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Ultracompact Three-Dimensional Tubular Conductivity Microsensors for Ionic and Biosensing Applications

Martinez-Cisneros, C. S., Sanchez, S., Schmidt, O. G., Xi, W.

Nano Letters, pages: 2219-2224, American Chemical Society, Washington, DC, 2014 (article)

Abstract
We present ultracompact three-dimensional tubular structures integrating Au-based electrodes as impedimetric microsensors for the in-flow determination of mono- and divalent ionic species and HeLa cells. The microsensors show an improved performance of 2 orders of magnitude (limit of detection \textequals 0.1 nM for KCl) compared to conventional planar conductivity detection systems integrated in microfluidic platforms and the capability to detect single HeLa cells in flowing phosphate buffered saline. These highly integrated conductivity tubular sensors thus open new possibilities for lab-in-a-tube devices for bioapplications such as biosensing and bioelectronics.

DOI [BibTex]

DOI [BibTex]


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Catalytic nanomotors for environmental monitoring and water remediation

Soler, L., Sanchez, S.

Nanoscale, 6(13):7175-7182, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Proton-proton collisions at ultra-relativistic energies in quark-gluon string model

Bravina, L., Bleibel, J., Malinina, L., Nilsson, M. S., Zabrodin, E.

EPJ Web of Conferences, 70, EDP Sciences, Les Ulis, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Hydrodynamic interactions induce anomalous diffusion under partial confinement

Bleibel, J., Dominguez, A., Günther, F., Harting, J., Oettel, M.

Soft Matter, 10(17):2945-2948, Royal Society of Chemistry, Cambridge, UK, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Clay nanotube encapsulation for functional biocomposites

Lvov, Y., Aerov, Artem A., Aerov, A. A., Fakhrullin, R.

Advances in Colloid and Interface Science, 207, pages: 189-198, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Wetting phenomena in electrolyte solutions

Ibagon, I.

Universität Stuttgart, Stuttgart, 2014 (phdthesis)

link (url) [BibTex]

link (url) [BibTex]


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Control of Self-Propelled Microjets Inside a Microchannel With Time-Varying Flow Rates

Magdanz, V., Sanchez, S., Schmidt, O. G., Khalil, I. S. M., Misra, S.

IEEE Transactions on Robotics and Automation, pages: 49-58, IEEE, New York, NY, 2014 (article)

Abstract
We demonstrate the closed-loop motion control of self-propelled microjets inside a fluidic microchannel. The motion control of the microjets is achieved in hydrogen peroxide solution with time-varying flow rates, under the influence of the controlled magnetic fields and the self-propulsion force. Magnetic dipole mo- ment of the microjets is characterized using the U-turn and the rotating field techniques. The characterized magnetic dipole mo- ment has an average of 1.4 $\times$ 10 \textminus 13 A.m 2 at magnetic field, linear velocity, and boundary frequency of 2 mT, 100 $\mu$ m/s, and 25 rad/s, respectively. We implement a closed-loop control system that is based on the characterized magnetic dipole moment of the mi- crojets. This closed-loop control system positions the microjets by directing the magnetic field lines toward the reference position. Experiments are done using a magnetic system and a fluidic mi- crochannel with a width of 500 $\mu$ m. In the absence of a fluid flow, our control system positions the microjets at an average velocity and within an average region-of-convergence (ROC) of 119 $\mu$ m/s and 390 $\mu$ m, respectively. As a representative case, we observe that our control system positions the microjets at an average velocity and within an average ROC of 90 $\mu$ m/s and 600 $\mu$ m and 120 $\mu$ m/s and 600 $\mu$ m when a flow rate of 2.5 $\mu$ l/min is applied against and along the direction of the microjets, respectively. Furthermore, the average velocity and ROC are determined throughout the flow range (0 to 7.5 $\mu$ l/min) to characterize the motion of the microjets inside the microchannel

DOI [BibTex]

DOI [BibTex]


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Electrostatic interaction between colloidal particles trapped at an electrolyte interface

Majee, A., Bier, M., Dietrich, S.

The Journal of Chemical Physics, 140(16), American Institute of Physics, Woodbury, N.Y., 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Capillary attraction induced collapse of colloidal monolayers at fluid interfaces

Bleibel, J., Dominguez, A., Oettel, M., Dietrich, S.

Soft Matter, 10(23):4091-4109, Royal Society of Chemistry, Cambridge, UK, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Trapping self-propelled micromotors with microfabricated chevron and heart-shaped chips

Restrepo-Pérez, L., Soler, L., Mart\’\inez-Cisneros, C. S., Sanchez, S., Schmidt, O. G.

Lab on a Chip, 14(9):1515-1518, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Order of wetting transitions in electrolyte solutions

Ibagon, I., Bier, M., Dietrich, S.

The Journal of Chemical Physics, 140(17), American Institute of Physics, Woodbury, N.Y., 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Specific salt effects on thermophoresis of charged colloids

Eslahian, K. A., Majee, A., Maskos, M., Würger, A.

Soft Matter, 10(12):1931-1936, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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H5MD: A structured, efficient, and portable file format for molecular data

De Buyl, P., Colberg, P. H., Höfling, F.

Computer Physics Communications, 185(6):1546-1553, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Emergent Long-Range Couplings in Arrays of Fluid Cells

Abraham, D. B., Maciolek, A., Vasilyev, O.

Physical Review Letters, 113(7), American Physical Society, Woodbury, N.Y., 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Effective interaction between a colloid and a soft interface near criticality

Law, A. D., Harnau, L., Tröndle, M., Dietrich, S.

The Journal of Chemical Physics, 141(13), 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Tubular micro- nanorobots: smart design for bio-related applications

Sanchez, S., Wang, X., Solovev, A. A., Soler, L., Magdanz, V., Schmidt, O. G.

In Small-Scale Robotics, 8336, pages: 16-27, Lecture Notes in Computer Science, Springer, Karlsruhe, 2014 (inproceedings)

Abstract
We designed microrobots in the form of autonomous and remotely guided microtubes. One of the challenges at small scales is the effective conversion of energy into mechanical force to overcome the high viscosity of the fluid at low Reynolds numbers. This can be achieved by integration of catalytic nano-materials and processes to decompose chemical fuels. However, up to now, mostly hydrogen peroxide has been employed as a fuel which renders the potential applications in biomedicine and in vivo experiments. Therefore, other sources of energy to achieve motion at the micro- nanoscale are highly sought-after. Here, we present different types of tubular micro- and nanorobots, alternative approaches to toxic fuels and also, steps towards the use of tubular microrobots as micro- and nanotools

DOI [BibTex]

DOI [BibTex]


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Photoactive rolled-up TiO2 microtubes: fabrition, characterization and applications

Giuducatti, S., Marz, S. M., Soler, L., Madani, A., Jorgensen, M. R., Sanchez, S., Schmidt, O. G.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices, pages: 5892-5901, Royal Society of Chemistry, London, UK, 2014 (article)

Abstract
Because of its unique properties, titania (TiO2) represents a promising candidate in a wide variety of research fields. In this paper, some of the properties and potential applications of titania within rolled-up nanotechnology are explored. It is shown how the structural and optical properties of rolled titania microtubes can be controlled by properly tuning the microfabrication parameters. The rolling up of titania films on different sacrificial layers and containing different shapes, achieving a control on the diameter of the fabricated titania microtubes, is presented. In order to obtain the more photoactive crystalline form of titania, one during-fabrication and two post-fabrication methods are demonstrated. Interesting applications in the fields of photocatalysis and photonics are suggested: the use of titania rolled-up microtubes as micromotors and optical microresonators is presented.

DOI [BibTex]

DOI [BibTex]


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How ions in solution can change the sign of the critical Casimir potential

Pousaneh, F., Ciach, A., Maciolek, A.

Soft Matter, 10(3):470-483, Royal Society of Chemistry, Cambridge, UK, 2014 (article)

DOI [BibTex]

DOI [BibTex]


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Critical Casimir interactions around the consolute point of a binary solvent

Mohry, T. F., Kondrat, S., Maciolek, A., Dietrich, S.

Soft Matter, 10(30):5510-5522, 2014 (article)

DOI [BibTex]

DOI [BibTex]